<template>
  <div >
        <h3>当前的值为:{{$store.state.app.countNumber}}</h3>
        <button>点击减1</button>
  </div>
</template>

<script>
export default {
 
  data() {
    return {
    
    }
  },
  methods: {
  
  }
}
</script>

<style lang="scss" >

</style>
